Finding the Fourth Proportional to 109,128.84, 163,692.54 and 28,075.74

Step by Step Solution

1. Step 1: Write the proportion equation
   109,128.84 : 163,692.54 = 28,075.74 : x
2. Step 2: Convert to fraction form
   109,128.84/163,692.54 = 28,075.74/x
3. Step 3: Cross multiply
   109,128.84x = 163,692.54 × 28,075.74
4. Step 4: Simplify right side
   109,128.84x = 4,595,789,192.98
5. Step 5: Solve for x
   x = 4,595,789,192.98/109,128.84
6. Step 6: Final answer
   x = 42,113.42